J 2006

Incidence of lysogenic, colicinogenic and siderophore producer strains among human saprophytic Escherichia coli.

ŠMARDA, Jan, David ŠMAJS and Sabina HORYNOVÁ

Basic information

Original name

Incidence of lysogenic, colicinogenic and siderophore producer strains among human saprophytic Escherichia coli.

Name in Czech

Incidence lysogenních, kolicinogenních a siderofory-produkujícíh kmenů mezi lidskými kmeny Escherichia coli.

Name (in English)

Incidence of lysogenic, colicinogenic and siderophore producer strains among human saprophytic Escherichia coli.

Authors

ŠMARDA, Jan (203 Czech Republic), David ŠMAJS (203 Czech Republic, guarantor) and Sabina HORYNOVÁ (203 Czech Republic)

Edition

Folia Microbiologica, 2006, 0015-5632

Other information

Language

Czech

Type of outcome

Článek v odborném periodiku

Field of Study

10600 1.6 Biological sciences

Country of publisher

Czech Republic

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 0.963

RIV identification code

RIV/00216224:14110/06:00016077

Organization unit

Faculty of Medicine

UT WoS

000242183400005

Keywords in English

Escherichia coli; human intestinal strains; colicinogeny; lysogeny; siderophore

Tags

International impact, Reviewed
Změněno: 25/6/2009 15:47, prof. MUDr. David Šmajs, Ph.D.

Abstract

V originále

The current incidence of E. coli strains in healthy humans capable of producing the inhibitive exoproducts such as temperate bacteriophages, corpuscular or HMW (high molecular weight) and proteinaceous or LMW (low molecular weight) colicins and siderophores was studied. 53 Escherichia coli strains were collected from the colons of 53 healthy human volunteers in Brno, Czech Republic. The strains were then tested for spontaneous and induced production of inhibitive exoproducts in a cross-test against each other. Of the strains tested, 39.6% produced bacteriophages, 43.4% of strains produced from one to several LMW colicins. Only 5.7% of strains formed HMW colicins. And 15.1% of strains (eight strains) produced exocellular siderophores different from enterochelin. Of the eight strains, seven strains formed aerobactin and one strain formed an untyped siderophore. E. coli strains differ greatly in the incidence of colicinogeny and lysogeny from its closest systemic relatives in the genus Escherichia and therefore should not be regarded as a model bacterium in this respect.

In English

The current incidence of E. coli strains in healthy humans capable of producing the inhibitive exoproducts such as temperate bacteriophages, corpuscular or HMW (high molecular weight) and proteinaceous or LMW (low molecular weight) colicins and siderophores was studied. 53 Escherichia coli strains were collected from the colons of 53 healthy human volunteers in Brno, Czech Republic. The strains were then tested for spontaneous and induced production of inhibitive exoproducts in a cross-test against each other. Of the strains tested, 39.6% produced bacteriophages, 43.4% of strains produced from one to several LMW colicins. Only 5.7% of strains formed HMW colicins. And 15.1% of strains (eight strains) produced exocellular siderophores different from enterochelin. Of the eight strains, seven strains formed aerobactin and one strain formed an untyped siderophore. E. coli strains differ greatly in the incidence of colicinogeny and lysogeny from its closest systemic relatives in the genus Escherichia and therefore should not be regarded as a model bacterium in this respect.

Links

GA310/03/1091, research and development project
Name: Mapování interakce kolicinů s citlivou a imunní bakteriální buňkou: receptorové studie a inaktivace kolicinu jeho imunitním proteinem
Investor: Czech Science Foundation
MSM0021622415, plan (intention)
Name: Molekulární podstata buněčných a tkáňových regulací
Investor: Ministry of Education, Youth and Sports of the CR, Molecular basis of cell and tissue regulations